INFO: task syz-executor.2:21308 blocked for more than 143 seconds.
Not tainted 5.15.118-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:23584 pid:21308 ppid: 11866 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0x12c4/0x4590 kernel/sched/core.c:6372
schedule+0x11b/0x1f0 kernel/sched/core.c:6455
schedule_timeout+0xac/0x300 kernel/time/timer.c:1860
do_wait_for_common+0x2d9/0x480 kernel/sched/completion.c:85
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x48/0x60 kernel/sched/completion.c:138
xfs_buf_iowait+0xb4/0x400 fs/xfs/xfs_buf.c:1573
xfs_buf_delwri_pushbuf+0x2cf/0x4b0 fs/xfs/xfs_buf.c:2251
xfs_qm_flush_one+0x266/0x350 fs/xfs/xfs_qm.c:1249
xfs_qm_dquot_walk+0x22a/0x4a0 fs/xfs/xfs_qm.c:86
xfs_qm_quotacheck+0x2f7/0x640 fs/xfs/xfs_qm.c:1335
xfs_qm_mount_quotas+0x328/0x610 fs/xfs/xfs_qm.c:1441
xfs_mountfs+0x162b/0x1ca0 fs/xfs/xfs_mount.c:904
xfs_fs_fill_super+0x100c/0x1240 fs/xfs/xfs_super.c:1658
get_tree_bdev+0x3fe/0x620 fs/super.c:1303
vfs_get_tree+0x88/0x270 fs/super.c:1508
do_new_mount+0x28b/0xae0 fs/namespace.c:2994
do_mount fs/namespace.c:3337 [inline]
__do_sys_mount fs/namespace.c:3545 [inline]
__se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3522
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f7a4e87a8ba
RSP: 002b:00007f7a4cdeaf88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00000000000096cb RCX: 00007f7a4e87a8ba
RDX: 0000000020009700 RSI: 0000000020009740 RDI: 00007f7a4cdeafe0
RBP: 00007f7a4cdeb020 R08: 00007f7a4cdeb020 R09: 0000000002000000
R10: 0000000002000000 R11: 0000000000000202 R12: 0000000020009700
R13: 0000000020009740 R14: 00007f7a4cdeafe0 R15: 0000000020000000
Showing all locks held in the system:
2 locks held by ksoftirqd/0/14:
1 lock held by khungtaskd/27:
#0: ffffffff8c91c5e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3265:
#0: ffff8880249c5098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc900020a32e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1da0 drivers/tty/n_tty.c:2147
4 locks held by kworker/u4:9/3904:
2 locks held by kworker/1:13/4598:
#0: ffff888011c66538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2280
#1: ffffc90004b97d20 ((work_completion)(&rew.rew_work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2282
3 locks held by syz-executor.2/21308:
#0: ffff888078e3a0e0 (&type->s_umount_key#94/1){+.+.}-{3:3}, at: alloc_super+0x210/0x940 fs/super.c:229
#1: ffff88808d2c1158 (&qinf->qi_tree_lock){+.+.}-{3:3}, at: xfs_qm_dquot_walk+0x132/0x4a0 fs/xfs/xfs_qm.c:73
#2: ffff888098668be8 (&dqp->q_qlock){+.+.}-{3:3}, at: xfs_dqlock fs/xfs/xfs_dquot.h:133 [inline]
#2: ffff888098668be8 (&dqp->q_qlock){+.+.}-{3:3}, at: xfs_qm_flush_one+0xca/0x350 fs/xfs/xfs_qm.c:1225
3 locks held by syz-executor.4/22469:
#0: ffffffff8d9d1d10 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x37b/0x5d0 net/core/net_namespace.c:469
#1: ffffffff8d9dda08 (rtnl_mutex){+.+.}-{3:3}, at: ip_tunnel_delete_nets+0xc9/0x330 net/ipv4/ip_tunnel.c:1118
#2: ffffffff8c920b28 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline]
#2: ffffffff8c920b28 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x280/0x740 kernel/rcu/tree_exp.h:842
1 lock held by udevadm/22510:
#0: ffffffff8c941e90 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: do_exit+0x285/0x2480 kernel/exit.c:828
1 lock held by syz-executor.2/22512:
#0: ffffffff8c941e90 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: copy_process+0x2210/0x3ef0 kernel/fork.c:2299
1 lock held by syz-executor.3/22518:
#0: ffffffff8d9dda08 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
#0: ffffffff8d9dda08 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x94c/0xee0 net/core/rtnetlink.c:5590
1 lock held by syz-executor.5/22514:
#0: ffffffff8c941e90 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: copy_process+0x2210/0x3ef0 kernel/fork.c:2299
1 lock held by syz-executor.5/22519:
#0: ffffffff8d9dda08 (rtnl_mutex){+.+.}-{3:3}, at: ip_rt_ioctl+0xe6/0x1720 net/ipv4/fib_frontend.c:627
1 lock held by syz-executor.0/22515:
#0: ffffffff8c941e90 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: copy_process+0x2210/0x3ef0 kernel/fork.c:2299
4 locks held by kvm-nx-lpage-re/22520:
#0: ffffffff8c941ca8 (cgroup_mutex){+.+.}-{3:3}, at: cgroup_attach_task_all+0x23/0x150 kernel/cgroup/cgroup-v1.c:61
#1: ffffffff8c7b9f50 (cpu_hotplug_lock){++++}-{0:0}, at: cgroup_attach_task_all+0x28/0x150 kernel/cgroup/cgroup-v1.c:62
#2: ffffffff8c941e90 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: cgroup_attach_task_all+0x34/0x150 kernel/cgroup/cgroup-v1.c:63
#3: ffffffff8c94df70 (&cpuset_rwsem){++++}-{0:0}, at: cpuset_can_attach+0x1e9/0x490 kernel/cgroup/cpuset.c:2197
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.118-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xe72/0xeb0 kernel/hung_task.c:295
kthread+0x3f6/0x4f0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 22521 Comm: syz-executor.2 Not tainted 5.15.118-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:169 [inline]
RIP: 0010:unwind_next_frame+0x1fe/0x1fa0 arch/x86/kernel/unwind_orc.c:448
Code: 46 ff 39 e8 0f 86 a7 15 00 00 89 e8 48 8d 1c 85 d8 29 ec 8e 48 89 d8 48 c1 e8 03 0f b6 04 10 84 c0 0f 85 3d 17 00 00 44 8b 23 <89> e8 ff c0 48 8d 1c 85 d8 29 ec 8e 48 89 d8 48 c1 e8 03 0f b6 04
RSP: 0018:ffffc90000dd0648 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffffffff8f1094f0 RCX: 0000000000096084
RDX: dffffc0000000000 RSI: ffffffff8a1ac6bd RDI: 0000000000000001
RBP: 0000000000091ac6 R08: 0000000000000010 R09: ffffc90000dd07f0
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000184fb0
R13: ffffffff8a1ac6bc R14: 0000000000096084 R15: ffffc90000dd0700
FS: 00007fd938ad9700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002015f030 CR3: 0000000097b9f000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
kasan_save_stack+0x36/0x60 mm/kasan/common.c:38
kasan_record_aux_stack+0xba/0x100 mm/kasan/generic.c:348
insert_work+0x54/0x3e0 kernel/workqueue.c:1363
__queue_work+0x963/0xd00 kernel/workqueue.c:1529
call_timer_fn+0x16d/0x560 kernel/time/timer.c:1421
expire_timers kernel/time/timer.c:1461 [inline]
__run_timers+0x6a8/0x890 kernel/time/timer.c:1737
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1750
__do_softirq+0x3b3/0x93a kernel/softirq.c:558
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x155/0x240 kernel/softirq.c:636
irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1096
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:lock_acquire+0x252/0x4f0 kernel/locking/lockdep.c:5626
Code: 2b 00 74 08 4c 89 f7 e8 ac e6 66 00 f6 44 24 61 02 0f 85 84 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc900069e7ae0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92000d3cf68 RCX: ffffffff816326d2
RDX: dffffc0000000000 RSI: ffffffff8a8b0f00 RDI: ffffffff8ad86100
RBP: ffffc900069e7c38 R08: dffffc0000000000 R09: fffffbfff1f79627
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000d3cf64
R13: dffffc0000000000 R14: ffffc900069e7b40 R15: 0000000000000246
__might_fault+0xb4/0x110 mm/memory.c:5311
do_recvmmsg+0x39d/0x8f0 net/socket.c:2773
__sys_recvmmsg net/socket.c:2846 [inline]
__do_sys_recvmmsg net/socket.c:2869 [inline]
__se_sys_recvmmsg net/socket.c:2862 [inline]
__x64_sys_recvmmsg+0x195/0x240 net/socket.c:2862
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fd93a588389
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd938ad9168 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007fd93a6a8050 RCX: 00007fd93a588389
RDX: 0000000000010106 RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007fd93a5d3493 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc4226ed3f R14: 00007fd938ad9300 R15: 0000000000022000